Baseball cap



FIG. 1 is a perspective view of the baseball cap showing my new design;

FIG. 2 is a rear elevational view thereof;

FIG. 3 is a left side elevational view thereof; and,

FIG. 4 is a right side elevational view thereof.

The broken lines in the drawings represent stitch lines, which form part of the claimed design. 

The ornamental design for a baseball cap, as shown and described. 